Station-recording means for radio receiving devices



Oct. 9

A. ZILLGER STATIO N RECORDING MEANS FOR RADIO RECEIVING DEVICES Filed Dec. 9, 1924 1 6'2 INVENTOR. By M ATTORNEY.

Patented Oct. 25, 1927.

TUNITED STATES PATIENT OFFICE,

AnnozILL En, on nannnnrn, rnrrnsYLvAnIA, AssIenon Torrosro MiasrER can. PORATION, or PHILADELPHIA, rnNnsYLvANIn, ACORrORArION OF DELAWARE.

srn'rromnnoonnrue MEANS ron RADIO nncnrvrne :onv'rons.

Application filed December 9,1924. Serial No. 154, 7. I

i lvly invention relates to signal receiving means for radio receiving apparatus and it has for its general object to provide a novel construction of means associated with an ad justable element of the said apparatus whereby when said element is adjusted to obtain signals from a sending or broadcastingstatio n the position thereof at final adjustment may be indicated and, recorded.

It is also anobject of the invention to pro vide a novel construction of means of the character indicated which comprises simplicity and efficiency and which may be embodied in the structure of a radio signal receiving set or apparatus without disorganization ofthe construction ofsaid apparatus. To these and other ends the lnvention 'comprehendsthe construction and arrangement of parts as hereinafter described inv detail, particularly pointed out in the claims,

and as illustrated in the accompanying claims without departing from the princi ple of the said invention.

In thedrawing, Fig. is a sectional side elevation taken on the line 1- 1 of 2; and

Fig.2 .is a transverse horizontal sectional- A h i i I portednndhel'd in. spaced relation T to each other in the manner as indicated. These View taken on the line of Fig. 1.

Referring to the drawlng 1 designates the front panel of insulating material ofaradio signal receiving set or apparatus upon which various parts and elements of said apparatus are mounted.

In the use of radio signal recelving apparatus it is, as is. well known, necessary to adjust certain parts or elements thereof in order to condition the apparatus so as to ad-.

just it for the receiving of Hertzian waves from distant points or stations. The con-;

denser in such apparatus is one of the elements which is adapted to be adjusted for that purpose.

as above indicated, and for the purpose of To condition the apparatus,

illustrating and indicating the principle of my invention I- have shown acondenser in the present instance. The device embo dying my invention is tionedat such point without paratus when final adjustment thereof has been'attained so that in case it is desired to employ the apparatus for interception of signals from the same station at a future time .the adjustable element may be reposition and without diff culty. 7 I

The condenser is indicated as a Whole at 2 and comprises stationary plates 3 and'movable or adjustable plates 4, the former being mounted upon one or "more posts 5 supported upon the panel 1. I

The 'inovable oradjustable plates 41 of .the condenser are mounted upon a rotatablv adjustable shaft 10 the front end of which projects through an opening 11 in the panel experimenta- '1 and is providedwith a 'dial 12 having a 1 scale thereon asusua l. The shaft 10 is prov ded inwardly of the panel 1 with a gear 15 of"relat1vely large diameter which is adapted to rotate withlthe shaft when the.

latter is rotatably adjusted. A small gear or pinion 17 issupp o'rt'ed upon ashort shaft 18 a distance from and in parallel relation to the shaft 10. The shaft 18 is rotatably mounted in an opening 19 through the panel 1.- Its fr'on-tend projects through saidopening and is provided with a k -ar se finger piece 20by means ofwhichfthe said'shaft may. be rotated. An idler gear isinoun'ted upon a shaft or support 2a, supported at its oppositeends, upon plates 25'and 26fsupplates are provided with openings 30 and 31 through whichthe shafts 10 and lBeXtend.

The said shafts constitute the supports for with inwardly extending flanged projections as" indicated at 32V which are secured together by fasteningmeans indicatedat 34:. It will he observed ithatthejshaft 18 'on which the ,small pinion17 is mounted is located in a horizontal plane a considerable distance below that in which the shaft 10 is located and that" the f ameqike structure comprising the plates 25 and126 is inclined upwardly at an angfe of approximately forty-five (45) degrees, asindicated in Fig. 1 of thetdrawing.

The plate .26 is provided at its lower end with a projection 4c0ftofithe outerjendof which the lower end of a coiled spring 41 is connected; The upper end of said spring is connected to an extension from the lower pivoted end of a lever arm;43. The said pivoted end of the lever. arm 43 is mounted upon a screw stud 44 which is secured to the plate 26 at'a point below but in adjacent relation to the shaft'lO. The lever arm 43- cam member 48 mounted upon the shaft 10.

The saidcam member is located between the plates 25 and 26. In Fig. 1 the cam is shown in such position that the [lever arm 43 is allowed to occupy its uppermost position under the influence of the spring 41. Ho

tation of the shaft 10 and of the cam .48

carried thereby to the right or in clockwise direction effects depression of the lever arm 43 so as tocause downward vertical movement of an indicating device 50 supported upon the outer end thereof. The said device comprises pointers or indicators 51 which projectin opposite directionsand is provided with a stem 52 which projects through and is slidable within a slot 53 extending longitudinally of the outer end portion of the said arm 43. The arm 43 is located inside of the panel 1 and the outer slotted end portion is located in juxtarelation to the inner surface of said panel. The stem 52 extendsthrough a vertical slot 55 in the panel 1 and moves up and down therein as "the arm 43 is oscillated upon its pivot.

At'about thetime the arm43 has reached its lowest position the projection escapes from the surface of the cam. 48 and under the influence of the spring 41 is quickly returned to its highest position.

Mounted upon the outside of the panel 1 is a label. or card holding device which is of rectangular shape and is provided with card 'orpaper holding openings 60 and 61. These openings 60 and 6 1 are separated by a cen- 'tral vertical strip 62 provided with a slot 63 which registers with the slot 55 in the panel-1. The stem '52 of the indicator extends through not only the slot Qbut also the slot 63. It will be understood that as the lever arm43 oscillates upon its pivot 44 the infdicator 50 is reciprocated in the slots 55 and 63 so that the indicating points 51 thereof cooperate with cards or sheets of paper 65 mounted with the said label holding device. The latter is secured to the outer or front side of the panel 1 by means'of screws 66.

In the employment of a radio signal receiving' apparatus provided withmy invention for the interception and'receiving of electric waves from distant broadcasting stations it will-be necessary to adjust the condenser so as toadapt it forthe interception of waves of the particular frequency which may be radiated from a particular broadcastingstation. Such adjustment is first effected by the rotation of the dial 12. By the manipulation of this dial an approximate adjustment is first obtained. For a further and more refined. adjustment the pinion 17 may be adjusted by rotating the knurled finger piece 20, which operates through the idler gear 22 to impart fine rotative adjustments to the gear 16 and the shaft 10 to which the said gear is rigidly secured. The adjustment of the shaft 10 and the condenser 48 carried thereby operates to accurately adjust and position the indicator 50 with the pointers 51 thereof in co-opei-ative relation with respect to the cards or strips of paper The position of either one of these pointers at such time may be recorded by writing opposite the same the letters or other data which will serve to designate the particular broadcasting stationfrom which at that time the electricwaves were received.

The word distant employed in the specification and claims with respect to sending or broadcasting stations is intended to refer to stations which are located both nearby and far away.

Having thus described my invention, what I claim-and desire to secure by Letters Patent is:

1. Station recording means for radio sig nal receiving apparatus comprising, in combination, a device which is adjustable to adapt said apparatus to intercept electric waves from distantstations, rotatable means for ad usting said device, an indicating device, a plvoted lever upon the outer end of whi'clrsaid indicating device is mounted, the

pivot for saidpivoted lever being located beyond the said rotatable means fromthe said indicating deviceand below the same, and means carried by said rotatable device for effecting pivotal movement of the said lever tothereby effect reciprocating movements of thesaid indicating device.

2. Station recording means for radio signal receiving apparatus comprising, in C0mbination, a device which is adjustable to adapt said apparatus to intercept electric waves from distant stations, rotatable means for adjusting said adjustable device, a lever pivoted in'juxtarelation to the said rptatable 1neans,the said lever extending from its pivot beyond the said'rotatable means, yielding means tending to cause pivotal movement of the said lever toward said rotatabletmeans, means carried by said rotatable means for engagingsaid lever and effecting pivotal movement theerof, indicating means mounted upon the outer end of said'lever, and means associated with, the

said indicating means whereby the position of the latter at any desired adjustment of the 'said adjustable device may be recorded.

3. Station recording means for radio signal receiving apparatus comprisingfin com bination, a device which is adjustable to adapt the said apparatus to intercept elec tric waves from distant broadcasting stations, a rotatable shaft for adjusting said adjustable device, a lever pivoted at one end in adjacent relation to said shaft, the said lever extending transversely of and beyond said shaft and being provided with a slot extending longitudinally ofits ,outerend portion, an indicating device slidably mounted within said slot, means carried by said rotatable shaft for effecting pivotal movements of the said lever, means whereby said indicating device may be caused to move in a vertical plane, and means associated with said indicating device whereby the position of the same at any desired adjustment of the said adjustable device may be recorded.

4. Station recording means for radio signal receiving apparatus comprising, in combination, a device which is adjustable to V adapt the said apparatus to intercept electric waves from distant stations, a rotatable shaft for effecting adjustment of said adjustable device, a lever pivoted at one end in adjacent relation to said shaft which lever extends transversely of and beyond said shaft, a cam mounted upon said shaft, yielding means operating to hold a portion of said lever in yielding contact with the said cam whereby upon rotation of the shaft and the cam carried thereby pivotal movement of the said lever is effected, an indicating device having slidable connection with the outer end portion of the said lever, vertically arranged recording strips located in cooperative relation with respect to said indicating device, and means for causing the said indicating device to move in a vertical plane upon pivotal movement of the said lever-.f

In testimony that I claim the foregoing as my invention, I have hereunto signed my name this 6th day of December A. D., 1924.

r I v ARNo' ZILLGER. 

